Device for melting solids



Sept. 2 1924.

.1. s: vvlLLcox DEVICE FOR MEL'IING SOLIDS 1922 2 Sheets-Shea'` l FiledDec. 22,

Sept. 2, 11924.`

J. S. WILLCO X DEVICE FOR MELTING SOLIDS 2 Sheets-Sheet 2 anne/Wto@ leSarei/ea [7l/lidar Filed Deo. 22.

panying drawings means for carrying t Patented sega. ai 192e.

UNlTF@ TATES ATENT Fliilhl.

,JLE SCREVEN "WILLCOX, OF SAVANNAH, GEGRGA.

DEVC] FR- MLTNG SOLDS.

Application .tiled December 22, 1922. .SeriaI No.62550'?.

vices for Melting Solids, of which the fol` lowing is a specification.

My invention relates to devices for meltm0 solids and more Jarticularl 1to that class s l l Aof devices used 'for melting sealing wai: and

similar materials.

An object of my invention is to provide a device which will quickly andeasily heat a charge of sealing wasr and permit a portion of said charOeto loe evacuated while at L23 the same time the device may he heldsteady .hy supports attached to the device.-

Another object of my invention to pro vide efficient manually controlledmeans whereby the flow of melted material from 'the discharge openingmay he prevented or regulated.

A still further object of my invention is to provide a device having aremovable handle which may he readily detached to Dpermit the insertionof a charge in the oven.

Another object ot my invention is to provide a device carrying a sealingstamp which is continually s d automatically kept clean and which, whennot in use, operates to cause the stoppage of the 'flow of meltedmaterial which there are few parts to get'out of order.

lilith these and other c Vects in view which may he incident to myimprovements, the invention consists in the parts and com hinations toloe hereinafter set forth and claimed, with the understanding that theseveral necessary elements comprising my invention, may he varied inconstruction, proportions and arrngement7 without de parting from thespirit and scope of the appended claims.

ln order to malte my invention more clearly understood' l have shown inthe accomhe ting same into practical effect7 without the improvements inAtheir useful applica" tions to the particular constructions.whichforthe purpose 'of explanation. have been made the suhjectfofillustration.

In the drawings:

Figure lis a view in side elevation of my device;

' is a viewpartially in longitudinal section taken through the axisof mydevice.

Fig'. 3 isa view in longitudinal section taken onlinee-B of Fig. l;

Fig. Ll is a cross-sectional view taken on the line 4 4 of l. looking inthe direction of the arrows;

Fig. 5 is a `cross-sectional view taken on the line 5 5 of Fig. il,looking in the direction of the arrows;

Fig. 6 is a cross-sectional view talren on the line 6 6 of Fig. Blockingin the direction of the arrows;

Fig. '7 is an end view of my device; y

Fig. 8 Vis a detail of the oven construction showing the ,distributionof the resistance element.

My device comprises a heating vessel formed of electrical insulatingmaterial and having at one end a discharge opening. ln proximity to thedischarge opening is located an electrical resistance element wound indoulole spirals in grooves on the lit-:ating` vessel. `Over theresistance material is a layer of heat and electric insulating material;which latter is covered by a shell. A detachable handle forms the leaseof the heat ingchamloer; and exterior and interior plugs closing adischarge opening are controlled by Ya mechanism in the handle. ilsealing stamp mechanism-is rotatively mounted near the discharge openingata point adjacent short supporting legs; and a cam on the mounting forthe sealing stamp cooperates with mechanism to shut olf the flow ofmelted material from the discharge opening dur- 3 is removably placed atone vend for the .purpose of making adyastments Aand tor moving ,theparte.

ing vessel in place.

Within the non-conducting layer 3 is a heating vessel 5, preferably ofelectrically non-conducting material and having at one end, which Idesignate the oven, aheavy double spiral groove 6 within which is placedan electric resistance element 7. The element is wound in the doublespiral grooves so that the conductors 8, which lead up from one end ofthe heating vessel to the portion which has the spiral grooves 6therein, are of even length. Y

Nearr the outer extremity of the oven end of the heating vessel 5 I haveprovided screw-threads 9 which coact with screwthreads 11 of the casing1 to hold the heatvI have provided the oven Aend of the heating vessellwith a comcally tapered portion 12 and a discharge opening 13. Throughthe walls of the heating vessel 5, the annular portion -4 ci theinsulating layer and the outer shell 1, I have drilled a holewhich isscrew-threaded and provided with a screw-threaded tap 14,

having an opening 15 therein. This opening acts as a vent for the escapeof gases produced in melting the substance placed in the heating vessel.By imscrewing the tap 14 the heating and insulating material may bereadily removed from the outer shell 1.

The handle 2 its within the casing 1 and its upper portion 16 fitsagainst the lower end of the short annular portion 4 of thenon-conducting layer 3,k and against the lower end oit' the heatingvessel 5. The upper portion 16 of the handle 2, therefore, forms a basefor the heating vessel. A

protecting tube 17 is screwed'at 18 intoy the portion 16 of the handle2.

Adapted to reciprocate within the protecting tube 17 is a stem 19 upon`which is mounted a ball or plug 21 which may be used to close from theinside the discharge opening 13 of the oven. Belowthe portion 16 of thehandle 2 and on the stem 19 is a lug 22 against the upper side of whichbears a compression spring 23 whose upper end bears against the heatingvessel base 16. This compression s ring normally keeps the plug 21 in te position shown inFig. 3, that is, withdrawn from the discharge opening13. Should the plug 21 be in a positon to block up the discharge opening13, upon heating of the material` within the. oven the material willsoon become soft enough to permit the compression spring v23 towithdrawl the plug 21 from the discharge opening. tube 17 preventsinjury to the stem 19 in its reciprocating movement within the oven.

Below the lug 22 on the stem 19 is located another compression spring24. A stop` button 25 prevents the compression spring 24 from slippingoff the stem 19. A lever 26 includes between its forked ends 27 the stem'Ihe protecting 19, and the compression spring 24 is adaptf ed to bearat its lower end against the forked ends 27 or' this lever. The lever ispivoted on ay supportmember 28 by means of a. rocking pin 29. Thesupport member 23 is firmly held within a. tubular guide 31 whose lowerend rests against shoulders 32 formed on an annular opening in thehandle 2. The upper end of the lever 26 is pivotally connected through arocker pin 33 to a thumb button 34.- A hole 34 in the thumb button inthe down posit-ionof the button is adapted to lie opposite a hole 35 inthe tubular guide. By inserting a'. suitable pin through holes 34 and 35the thumb button 34 may be held in the down position. n

Preferably integrally formed with the thumb button y34 is a lever arm 35which is pivoted by means of a. rocker pin 36 to an upstanding support37 iirmly seated within an aperture 38 in the handle 2. The lever arocker pin 41, rod 42, adapted to reciprocate in a directionsubstantially parallel 'to the` longitudinal axis of the kheatingvessel.

Ihe reciprocating rod 42 is bent at 43 and provided at its upperVextremity with a plug 44 which is adapted to seat against the' eX-terior 'of `the discharge opening 13 to shut .olil the flow of meltedmaterial. The rod 42 reciprocates freely through an outstanding supportarm 45 which may be integrally' 'formed with the casing l. Mounted onthe rod 42 at a point slightly below the support arm 45 is a cam member46 through which the rod may be reciprocated, in a manner tobedescribed, irrespective of any manual pressure on the. thumb button 34.vAdapted to iit around the casing lis a holder *meins- 35 is providedwith an upstanding arm 39 to which is pivotally connected. by means of lGO ber 47 One side of the holder member passes through a slot 48 in thesupport arm" 45, and the other part of the holder member 47 passes downunder the other side of the casing 1 and is adaptedto i'it over anoutstanding lug 49, which passes through an aperture 51 m the holdermember 47 *AtJ its lower' extremity the holder member 47 terminates intwo short legs 52. The upper part oi lthe holder member 47 is providedvwith carriers and a clamping mechanism 53 in which is held a cleansingsponge 54.

nvthe outstanding'lug 49 is pivoted an arm 55 and pivoted on a lug 56 ofthe supn port arm 47 is an arm 58. Ihe arm 58 is to cooperate with thelcam member 46 of the reciprocating rod 42. Thearms 55 and 58 arefastenedat their upper extremities to a handle 61 by means'ot a pivot pin 62upon which the handle 61 is rotatively mounted. The handle 61 isprovided with a sealing stamp 63.

provided with a cam 59 which is adapted Y 1n order to lead the currentinto the leads 8 of the heating vessel, the leads 8 are provided attheir termini with contact members 64. The handle 2 is provided with twoan` bers 64. The lower ends of the conductor .springs 66 contact attheir lower ends with conductor vterminals 67.

The conductor terminals 67 constitute the ends of conductors 68 whichare consolidated into the lead-in wire 69, that lies within an aperture71 within the center of `the handle This aperture 71 acts also as ahousing tor the end of the stem 19.

The lead-in wire passes through a central aperture 'T2 within a screw'plug T3 placed at the lower end of the aperture 71. The screw plug 73is formed with a sup-v porting member or ring 74 by which the device maybe hung ona suitable hookwhen not in use. 4The lead-in wire G9 isprovided with a screw socket 7 5. A snap` switch T6 may be located nearv.the handle 2 for convenience in turning the current on or o.

In use the heating vessel 5 is lilled with a suitable quantity oi'sealing wax or any other material by removing the handle 2. The handle 2is then slipped into place and the conductor compression springs closethe circuit through the screw socket 75, the snap switch 76, theconductors '68 and the resistance coils 7. Should the interior lplug .21be stuck fast within the discharge apere ture 13 in the oven, themelting of the material in proximity to the Vaperture 13 will permitthe'compressionspring23 to withdraw the plug 21 from the aperture.Should it be found desirable to 'close the aperture 13, a pressure onthe thumb button 34 will act through the lever 26 to cause thearms 27 topress on the compression spring 24, whichy will overcome the pressure ofthe compresf sion spring 23 and cause the longitudinal plug 21 to closethe discharge aperture 13. Ey reason of the'fact that the-pressure ofthe thumb button l34 is exerted through a spring 24, damage caused byundue strains and sticking of the plug in the material within the oven,is avoided. At the saine time lever arm 39 is rocked to 'cause -cammember 46 of the .rod/42 to reciprocate the rod in a backward direction.This operates through arm 39, through arm 35 and through lever 26 totransmit motion to the stem 19 to close the discharge aperture 13 fromthe interior. The backward reciprocation 01": the rod 42 causes theexterior plug 44 to close the discharge aperture 1'3 trom lthe exterior.Therefore, in eachstamping .operation the aperture 13 is closed bothfrom the exterior and'the interior. As has been pre viously explained,this sealing ot the discharge aperture 13 may be accomplished bypressure on the thumb button 34, irrespec- 'tive of the sealingoperation.

T have described a device in which the operation of closing thedischarge vent may be accomplished either automatically or .at will.Though I have shown the closing of the discharge aperture asaccomplished both Atrom the exterior and the interior simultaneously,either of these mechanisms toraccomplishing the exterior and theinterior it tobe understood that T do not confine my# self tothe precisedetails of construction herein set forth, by way of illustration, as itis apparent that many changes vand variations may be made therein, bvthose skilled in the art, without departing from the spirit of theinvention, or exceeding the scope of 'the appended claims.

T claim:

1. A device of the class specified comprising a heating vessel having adischarge opening therein, an exterior plug for the discharge opening,means to operate said plug, an'interior plug Jfor the discharge ismounted extending through the heating vessel, and means coacting withthe stem vto 'normally keep the plug unseated.

4. A device ot the' class specitiedcomprising a heating vessel having adischarge opening therein, an interior plug kfor the Y on thesteinwithout the heating vessel, a

f ineansacting'V on said rod a guide on the a lug on the stemy withoutthe heating vessel, and a compression spring between the heating vesselbase and the lug for normally keeping vthe plug unseated.

6. A device of .he class-specified comprising a heating vessel having adischarge vopening therein, an interior plug for the discharge opening,a stem on which the plug is mounted extending through the heatingvessel, a base ,for the heating vessel, a lug compression springoperating on said lug, and Vresilient means for exerting a compressioncontra, to that of the' compression spring for seating the plug inthedischarge opening.

7. A device of the class specified comprising a heating vessel having adischarge opening therein, an interior plug for thefdis-v chargeopening,.a stem on which the plug is mounted extending through theheating vessel, a base :tor the heating vessel, a lug on the stem belowthe base, a compression spring on the stem between the lugand the baseof vessel, a second compression spring on the stem below the lug, andlever means for exerting compression through the second mentionedcompression spring to 'overcome the tirst mentioned spring and seat theplug in the discharge opening. f

8. A device of theclass specified comprising a heating vessel having a.discharge opening therein, an interior plug forv said opening, a'rodcarrying said plug, resilient device in which the rod is adapted toreciprocate, and a manually contro-lled lever on the device forreciprocating the rod to seat the plug in the discharge opening.

9. A device of the class specified comprising a heating vessel having 'adischarge opening therein, an exterior plug forsaid.,

opening, a rod carrying vsaid plug, a guide on the device in which therod is adapted to reciprocate, a cam member on the rod,

y a sealing stamp mechanism pivoted on the device, a cam on the sealingstamp mechanism cooperating with ythe cam member whereby the rod isreciprocated to seat the l plug in the discharge opening during astamping operation.

l0. A device of the class specified comprising a heating vessel ofelectrically nonconducting vmaterial having al discharge opening, doublespiral grooves on the exterior thereof in proximity to the vdischargeend, an electrical resistance element wound in the double spiralgrooves,anda detachable handle forming the base of the heating. vessel.

11. A device of the class specified comprising a heating vessel ofelectrically nonconductive material having a -discharge opening, doublespiral grooves in the exterior thereof in proximity to the dischargeend, an electrical resistance element wound in the double spiralgrooves, a detachable handle forming the base of the'heating vessel, aheating insulating cover vover the heating vessel, and anouteir casing,said device having located near the back a vent throughl the outercasing, the heat insulating cover and the heating vessel wall.

l2. A' device of the class specified-'comprising a heating vessel havinga discharge outlet, double spiral grooves in the exterior thereof, anouter casing, heat insulating materia-l around said doublefspiralgrooves and within the outer casing, and a vent extending through theouter casing, ythe. heat insulating cover and the heating vessel wall.

13. A device of the class specified com-V prising a heating vesselhaving a discharge outlet therein', a handle on said vessel an outercasing, heat insulatingmaterial between the casing and vessel, meansoperable from the handle to control the flow of heating material fromthe vessel, a detachable handle forming a base for the vessel and shortlegs located' in proximityv to the discharge opening whereby7 the devicemay be supported and steadied in pouring.

14. A devicev of the class speci-fied comprising a heating vessel havinga discharge opening therein, a holder for cleansing inaterial attachedto the device near the discharge opening, and a sealing stamp rotativelymounted above the holder and normally in `cont-act with the 'cleansingmate-Y rial whereby the stamp'may be kept constantly-cleansed forinstant use.

l5. A device of the class specilied'comprising a heating vessel havingadischarge opening therein, a holder for cleansing inaterial attached tothe device near the discharge opening, a sealing stamp rotativelymounted above the holder whereby the stamp may be kept constantlycleansedA for instant use, a'plugy vfor the inside of the dischargeopening, ya lplug' for the outside ot the discharge opening, a camcarried by the rotatively` mounted sealing stamp mechanism` meanscooperating with said cam whereby the exterior and interior plugs willbe seated during .the stamping operation.

'16; A device of the class'speciied kcomprising a heating vessel, anelectrical resistance heating elementtor theheating vessel, a detachablehandle Jfor the heating ves sel havinf` a passageway therein forelectrical conductors, a screw-plug for the exterior end of thepassageway for guiding the con ductors, and a supporting memberintegrally formed with the screw-plug for hanging up the device.

17. A device of the class specified comprising a heating vessel having adischarge opening therein, an interior plug for the discharge opening, astem on which the plug is mounted extending through the heating vessel,means coacting with the stem to normally keep the plug unseated, anexteriorl plug for said opening, a rod carrying said plug, a guide onthe device in which the rod is adapted to reciprocate, and a manuallycontrolled thumb lever on the device whereby the rod and stem may bereciprocated to close the discharge opening from both the exterior andthe interior.

18. A device of' the class speciiied comprising a` heating vessel havinga discharge opening therein, an interior plug for the discharge opening,a stem on which the plug is mounted extending through the heatingvessel, a protecting tube through which the stem is adapted toreciprocate, an exterior plug for said opening, a rod carrying saidplug, a guide on the device in which the rod is adapted to reciprocate,a cam member on the rod, a sealing stamp mechanism cooperating with thecam member whereby the rod is reciprocated to seat the exterior plug,and means cooperating with the rod to cause the interior plug to seat.

19. A device of the class speciiied comprising a heating vessel having adischarge opening therein., an interior plug 'for the discharge opening,a stem on which the plug is mounted extending through the heatingvessel, a protecting tube through which the stem is adapted toreciprocate, a base for the heating vessel, a lug on the stem below thebase, a compression spring on the stem between the lug and the base, asecond compression spring on the stem below the lug, an exterior plugfor said opening, a rod carryinU said plug, a guide on the device inwhicih the rod is adapted to reciprocate, a cam member on the rod, asealing stamp mechanism pivoted on the device, a cam on the sealingstamp mechanism cooperating with the cam member whereby the rod may bereciprocated to seat the plug, a lever means for exerting the pressureon the second mentioned compression spring to overcome the irstmentioned compression spring and seat the interior plug simultaneouslywith the seating of the exterior plug.

20. A device of the class specified, comprising a heating vessel havinga discharge opening therein, a holder for cleansing Inaterial attachedto the device near the discharge opening, short legs integrally formedwith the holder, and a sealing stamp rotatively mounted above therholderand normally in contact with the cleansing material whereby the stampmay be kept constantly cleansed for instant use.

2l. A device of the class specified comprising a heating vessel having adischarge opening therein, a holder for cleansing materials attached tothe device near the discharge opening, a sealing stamp rotativelymounted above the holder and normally in Contact with the cleansingmaterial, a plug for the inside of the discharge opening, and meanscooperating with the movement of the stamp to operative position to plugup the discharge opening.

22. A device of t-he class specilied comprising a heating vessel, anelectrical resistance element for heating said vessel, a detachablehandle for the heating vessel having a passage-way therein, electricallead-in conductors in said passage-way, and conductor compressionsprings in said handie connecting the electrical resistance element tothe lead-in conductors.

23. A device of the class specified com prising a heating vessel havinga discharge opening therein, double spiral grooves on the exterior ofthe vessel in proximity to the discharge end, an electrical resistanceelement wound in the double spiral grooves, electrical insulatingmaterial wrap ed around the heating vessel and the electrical resistancemounted thereon, an interior plug for the discharge o ening, a stem onwhich the plug is mounted extending through the heating vessel, aprotecting tube through which t-he stem is adapted to reciprocate, anexterior plug for said opening, a rod carrying said plug, a guide on thedevice in which the rod is adapted to reciprocate, a cam member on therod, a sealing stamp mechanism cooperating with the cam member wherebythe rod is reciprocated to seat the exterior plug, means cooperatingwith the rod to cause the interior plug to seat, an outer casing, a heatinsulating material placed between the outer casing and the electricalresistance andfelectrical insulation, a vent near the back of the deviceextending through the outer casing, the heat insulating cover and theheating wall, a detachable handle for the heating vessel having apassageway therein l:tor the electrical conductors, a screw plug for theexterior end of the passageway for guiding the conductors, and asupport-ing member integrally formed with the screw plug for hanging upthe device.

In testimony whereof I aiix my signature.

JULE SCREVEN WILLCOX.

